The spring population census utilizing two aircrafts was initiated March 3, 1970 and terminated March 24, 1970. Impassable roads made it impossible to run driving census lines until after the height of booming activity. ...

The Attwater's prairie chicken spring population census; utilizing three airplanes, one helicopter, and ground counts was completed March 23, 1974. The total Attwater's prairie chicken population was estimated to be 2,004 ...

No spring census was conducted during this segment since the project was approved after prairie chicken booming activities terminated. Landowners interviewed during this segment estimated that 1,773 birds occupied an ...

Initiation of production surveys began in May and continued through August. A total of 132 poults was counted. The poult/adult ratio was 0.17:2.7. A total of 15 nests was found in Austin County of which 11 had been destroyed.

Initiation of producton surveys began in May and continued through August. A total of 186 poults were counted. The poult:adult ratio was 0.96:1.00. Of 19 nests found in Colorado and Austin counties 13 were destroyed by ...

The Attwater's prairie chicken (APC) (Tympanchus attwateri) has persisted in southern Galveston County, Texas despite a severe loss of coastal prairie habitat and degraded state of remaining grasslands. Historically, up ...

Developmental rates of the Aufwuchs community on glass slides, plastic and asbestos plates, and sedimentation rates were determined in flow-through aquaria located in a greenhouse. These aquaria, used to culture selected ...

Developmental rates of the Aufwuchs community on glass slides, plastic and asbestos plates, and sedimentation rates were determined in flow-through aquaria located in a greenhouse. These aquaria, used to culture selected ...

Described is an automatic sampling device used to collect and preserve postlarval shrimp (Penaeus spp.). At timed intervals, seawater is pumped through collecting nets which retain samples of organisms including shrimp. ...

Biological laboratory studies were conducted to evaluate the bioavailability of sediment-absorbed heavy metals to benthic invertebrates and to determine the degree of correlation between tissue concentration and metals ...

Waterfowl mortality form avian cholera during July 1979-May 1980 was widespread in the Central and Mississippi flyways, occurring in a wide variety of species and locations from nesting grounds of snow geese (Chen caerulescens) ...

The Houston-Galveston Area Council (HGAC) sampled aviation activity at seven airports. This information was obtained for the 1996 Continuing Aviation System Planning Program (CASPP). This study obtains a statistical ...